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author | Remko Tronçon <git@el-tramo.be> | 2010-02-11 12:14:00 (GMT) |
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committer | Remko Tronçon <git@el-tramo.be> | 2010-02-11 12:14:00 (GMT) |
commit | 0efa7c32aaf21a29b42b5926cc116007056843be (patch) | |
tree | 882f663a5dd0e65694bf6077b71086dd77fd7ff8 /3rdParty/Boost/boost/asio/detail/eventfd_select_interrupter.hpp | |
parent | 1d20eabbc32274b491b4c2bedf73d19933d97bfd (diff) | |
download | swift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.zip swift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.tar.bz2 |
Moved some modules into separate git modules.
Diffstat (limited to '3rdParty/Boost/boost/asio/detail/eventfd_select_interrupter.hpp')
m--------- | 3rdParty/Boost | 0 | ||||
-rw-r--r-- | 3rdParty/Boost/boost/asio/detail/eventfd_select_interrupter.hpp | 157 |
2 files changed, 0 insertions, 157 deletions
diff --git a/3rdParty/Boost b/3rdParty/Boost new file mode 160000 +Subproject 3bbdbc8cf1996f23d9a366da8bac0f97be6ad79 diff --git a/3rdParty/Boost/boost/asio/detail/eventfd_select_interrupter.hpp b/3rdParty/Boost/boost/asio/detail/eventfd_select_interrupter.hpp deleted file mode 100644 index cac8405..0000000 --- a/3rdParty/Boost/boost/asio/detail/eventfd_select_interrupter.hpp +++ /dev/null @@ -1,157 +0,0 @@ -// -// eventfd_select_interrupter.hpp -// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com) -// Copyright (c) 2008 Roelof Naude (roelof.naude at gmail dot com) -// -// Distributed under the Boost Software License, Version 1.0. (See accompanying -// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -// - -#ifndef BOOST_ASIO_DETAIL_EVENTFD_SELECT_INTERRUPTER_HPP -#define BOOST_ASIO_DETAIL_EVENTFD_SELECT_INTERRUPTER_HPP - -#if defined(_MSC_VER) && (_MSC_VER >= 1200) -# pragma once -#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) - -#include <boost/asio/detail/push_options.hpp> - -#include <boost/asio/detail/push_options.hpp> -#include <boost/config.hpp> -#include <boost/throw_exception.hpp> -#include <boost/system/system_error.hpp> -#include <boost/asio/detail/pop_options.hpp> - -#if defined(linux) -# if !defined(BOOST_ASIO_DISABLE_EVENTFD) -# include <linux/version.h> -# if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22) -# define BOOST_ASIO_HAS_EVENTFD -# endif // LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22) -# endif // !defined(BOOST_ASIO_DISABLE_EVENTFD) -#endif // defined(linux) - -#if defined(BOOST_ASIO_HAS_EVENTFD) - -#include <boost/asio/detail/push_options.hpp> -#include <fcntl.h> -#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 -# include <asm/unistd.h> -#else // __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 -# include <sys/eventfd.h> -#endif // __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 -#include <boost/asio/detail/pop_options.hpp> - -#include <boost/asio/error.hpp> -#include <boost/asio/detail/socket_types.hpp> - -namespace boost { -namespace asio { -namespace detail { - -class eventfd_select_interrupter -{ -public: - // Constructor. - eventfd_select_interrupter() - { -#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 - write_descriptor_ = read_descriptor_ = syscall(__NR_eventfd, 0); -#else // __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 - write_descriptor_ = read_descriptor_ = ::eventfd(0, 0); -#endif // __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 - if (read_descriptor_ != -1) - { - ::fcntl(read_descriptor_, F_SETFL, O_NONBLOCK); - } - else - { - int pipe_fds[2]; - if (pipe(pipe_fds) == 0) - { - read_descriptor_ = pipe_fds[0]; - ::fcntl(read_descriptor_, F_SETFL, O_NONBLOCK); - write_descriptor_ = pipe_fds[1]; - ::fcntl(write_descriptor_, F_SETFL, O_NONBLOCK); - } - else - { - boost::system::error_code ec(errno, - boost::asio::error::get_system_category()); - boost::system::system_error e(ec, "eventfd_select_interrupter"); - boost::throw_exception(e); - } - } - } - - // Destructor. - ~eventfd_select_interrupter() - { - if (write_descriptor_ != -1 && write_descriptor_ != read_descriptor_) - ::close(write_descriptor_); - if (read_descriptor_ != -1) - ::close(read_descriptor_); - } - - // Interrupt the select call. - void interrupt() - { - uint64_t counter(1UL); - int result = ::write(write_descriptor_, &counter, sizeof(uint64_t)); - (void)result; - } - - // Reset the select interrupt. Returns true if the call was interrupted. - bool reset() - { - if (write_descriptor_ == read_descriptor_) - { - // Only perform one read. The kernel maintains an atomic counter. - uint64_t counter(0); - int bytes_read = ::read(read_descriptor_, &counter, sizeof(uint64_t)); - bool was_interrupted = (bytes_read > 0); - return was_interrupted; - } - else - { - // Clear all data from the pipe. - char data[1024]; - int bytes_read = ::read(read_descriptor_, data, sizeof(data)); - bool was_interrupted = (bytes_read > 0); - while (bytes_read == sizeof(data)) - bytes_read = ::read(read_descriptor_, data, sizeof(data)); - return was_interrupted; - } - } - - // Get the read descriptor to be passed to select. - int read_descriptor() const - { - return read_descriptor_; - } - -private: - // The read end of a connection used to interrupt the select call. This file - // descriptor is passed to select such that when it is time to stop, a single - // 64bit value will be written on the other end of the connection and this - // descriptor will become readable. - int read_descriptor_; - - // The write end of a connection used to interrupt the select call. A single - // 64bit non-zero value may be written to this to wake up the select which is - // waiting for the other end to become readable. This descriptor will only - // differ from the read descriptor when a pipe is used. - int write_descriptor_; -}; - -} // namespace detail -} // namespace asio -} // namespace boost - -#endif // defined(BOOST_ASIO_HAS_EVENTFD) - -#include <boost/asio/detail/pop_options.hpp> - -#endif // BOOST_ASIO_DETAIL_EVENTFD_SELECT_INTERRUPTER_HPP |